Convolution + MQA = speed Issue

[Luca_Celli]

Roon Core Machine

Roon Nucleus+ last firmware updated

Networking Gear & Setup Details

router fritzbox 7490
switch NETGEAR GS105
switch NETGEAR GS308

Connected Audio Devices

Gold note DS-10 Evo DAC connected by ethernet

Number of Tracks in Library

Description of Issue

I use roon convolution machine, it works good but when I play a FLAC 44.1 16bit 44.1 MQA, roon plays at 1.1x speed. it goes faster then normal.

if I disable MQA capability of the DAC and I let roon doing decoding and rendering of MQA I have no such a problem.

If I play all other frequencies combination (up to now) I have no problem, even if I play FLAC 44.1 24bit 44.1 MQA I have no issues.

I already tried to change filter in the conv. machine but the issue persists.it seems an issue related to MQA and 16bit combination.
Obviously if I switch off convolution everything works good.

[Traian_Boldea]

no issue for me. Maybe you could point me out to a specific track to try.

[Luca_Celli]

I cannot send it right now, I will send you ASAP. I tried several cases and it´s always same issue. Do you think it could be a DAC issue? It shouldn´t be from my knowledge point of view

[Traian_Boldea]

I was thinking the convolution files, maybe got corrupted. Did you do yourself the convolution files? When I export as wav from REW I can choose what frequencies to export, for every frequency a wav file or less of them and roon does the upsampling of those files.

Maybe the dac doesn’t like the repackaging… I do not have an idea. But we can test maybe we find something.

You can send me the convolution files if you want me to try with those.

[Luca_Celli]

Hi, yes, I did it by myself. It tried with conol. files inversion filter and EQ. filter. For both of them I tried a zip file with 44.1 and 48 and or a zip file with 44.1 - 48 - 88.8 - 96 - 192. It seems I have same issue.
I would like to send you the dsp files but I don´t know how to do it! I really would appreciate your help!

[Traian_Boldea]

I do not know conol.
How did you load them in Roon? Usually there is a browser method. Also it should tell you the name of the zip file so maybe you can search for their names

For example my zip files it is called “MLP All Az corrected inverted”

If you do not find them I can send you mine and load them in a convolution filter to see if they do the same thing.

[Traian_Boldea]

Download link
https://we.tl/t-NUuf8YZZLu
1 item
MLP All hz corrected inversion.zip

1.05 MB

Hope it works like this (wetransfer)

[Traian_Boldea]

Pls put a headroom of -5 db just to be on the safe side

[Luca_Celli]

Thanks Traian, I will try ASAP. Sorry I meant convolution filter.
Yes I can find the file but I was thinking how to send you. I´ll try

[Luca_Celli]

https://we.tl/t-z9MeK6V7bL

inversion filter

[Traian_Boldea]

I,ll let you know in 10 minutes

[Traian_Boldea]

Sounds ok to me. Where are you actually see 1.1x playing speed so I can check that out

[Traian_Boldea]

Also the other one sounds ok

Are the dac settings in roon ok, or can you change the settings directly to the dac? I’m trying to think were could be the issues

I did I mistake, I did not have the enable roon core mqa. I’ll recheck

Still no speed playing issue

[Luca_Celli]

I think the setting in roon are corrected. I tried with DAC as full decode, only rendering and they don´t work (only with this 44.1-16-44.1 MQA).
I check the speed manually. Every 10 second it gains 1 second… obviously your hear a slightly different sound

[Traian_Boldea]

@Luca_Celli

I check the speed manually. Every 10 second it gains 1 second…

Never would i have that idea. But yes clearly you could hear the sound difference.

For me the settings are decoder and render with the mqa core enabled

Have you any other way to connect to the dac?

[Luca_Celli]

Yes I can connect through coax to a discovery elac roon endpoint… I don’t remember if I tried that

[Traian_Boldea]

have you tried my convolution files?
I cannot think something else.
Do you have a second computer where you can enable the core just for a test (with a new roon instal)?

[Traian_Boldea]

Do you have USB B? can you bring the core close by? (e can only find the goldnote 10 eve and I see it hs a usb B)

[Luca_Celli]

Same issue with your file too…
unfortunately I have 2 macbook pro where I cannot run roon 2.0

[Traian_Boldea]

Can you connect the nucleus to goldnote using usb?